# FlexAI Usage API

**Canonical:** https://apis.io/apis/flexai/flexai-usage-api/  
**Provider:** FlexAI — https://apis.io/providers/flexai/  
**Base URL:** https://api.flex.ai  
**Documentation:** https://docs.flex.ai/inference-api/overview

FlexAI Usage API is one of 8 APIs that [FlexAI](https://apis.io/providers/flexai/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Usage. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, a getting-started guide, and authentication docs.

Programmatic spend and quota for the calling key.

## Operations (3)

| Method | Path | Summary |
|---|---|---|
| GET | `/v1/flex/usage` | Programmatic spend for the calling key |
| GET | `/v1/flex/usage/request/{request_id}` | Usage and cost for a single request |
| GET | `/v1/flex/key` | Limits and remaining credit for the calling key |

## Machine-readable artifacts (5)

- **OpenAPI** — https://artifacts.apis.io/flexai/openapi/flexai-usage-api-openapi.yml
- **Documentation** — https://docs.flex.ai
- **APIReference** — https://docs.flex.ai/inference-api/reference/openai-compatibility
- **GettingStarted** — https://docs.flex.ai/inference-api/quickstart
- **Authentication** — https://artifacts.apis.io/flexai/authentication/flexai-authentication.yml

## Other FlexAI APIs (7)

- [FlexAI Audio API](https://apis.io/apis/flexai/flexai-audio-api/)
- [FlexAI Completions API](https://apis.io/apis/flexai/flexai-completions-api/)
- [FlexAI Embeddings API](https://apis.io/apis/flexai/flexai-embeddings-api/)
- [FlexAI Images API](https://apis.io/apis/flexai/flexai-images-api/)
- [FlexAI Models API](https://apis.io/apis/flexai/flexai-models-api/)
- [FlexAI Video API](https://apis.io/apis/flexai/flexai-video-api/)
- [FlexAI Chat Completions API](https://apis.io/apis/flexai/flexai-chat-completions-api/)

## Tags

Usage

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/flexai/flexai-usage-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/flexai/.